Built-in electrical inflating and deflating pump for inflatable product

ABSTRACT

A built-in electrical inflating and deflating pump for inflatable product includes an air-pump, a panel, a housing and a base. The inlet of the air-pump is provided with an inlet hole communicated with external space and an inlet hole communicated with an internal space of an inflatable product respectively, the outlet of the air-pump is provided with an outlet hole communicated with external space and an outlet hole communicated with the internal space respectively as well. The first valve sheet is provided between two inlet holes, the second valve sheet is provided between two outlet holes, and each of these two valve sheets is moved between the respective corresponding inlet holes or outlet holes under the control of the valve pole and the valve sheet transmission-control device to open or close their respective corresponding inlet holes or outlet holes. The advantage of the present invention is to provide a built-in air-pump which is unnecessary to be removed and can quickly inflate an inflatable product, and quickly deflate the same as well.

BACKGROUND OF THE INVENTION

The present invention relates to a built-in electrical inflating and deflating pump for inflatable product, that is, to a built-in electrical inflating and deflating pump for inflating or deflating an inflatable product such as an air bed and the like.

Conventional built-in air-pump for inflatable product comprises a base fixed in an inflatable product, an air-pump capable of being screwed into the base and a cover for closing air-inlet of the air-pump. Electrodes are provided in the base and the air-pump. When inflating, an outlet of the air-pump is screwed into the base with its inlet facing outwards, and the air pump is screwed to power it on to inflate. When deflating, an inlet of the air-pump is screwed into the base with its outlet facing outwards, and the air pump is screwed to power it on to deflate. This kind of built-in air-pump has the following drawbacks: (1) inconvenient operation in three aspects: (i) it is necessary to screw the air-pump off the base first and then screw the same in a reverse orientation when the air-pump is switched from inflation to deflation or vice versa, (ii) it's required to screw the air pump with large volume, in addition a considerable rotational resistance due to an O-ring in the base results in a tightening feeling, (iii) a cover must be turned onto an inlet of the air-pump to prevent air-leaking after inflation is completed; (2) air-leaking tends to occur in the place where the pump body of the air pump is screwed onto the O-ring of the base.

SUMMARY OF THE INVENTION

The object of the present invention is to overcome the drawbacks of the prior art and to provide a built-in inflating and deflating pump unnecessary to be removed from inflatable product. The invention comprises an air-pump, a panel, a housing and a base, characterized in that the air-pump comprises a first valve sheet, a second valve sheet and a valve sheet transmission-control device; the inlet of said air-pump is provided with an inlet hole communicated with external space and an inlet hole communicated with an internal space of an inflatable product respectively, the outlet of said air-pump is provided with an outlet hole communicated with external space and an outlet hole communicated with an internal space of an inflatable product respectively as well; said first valve sheet is provided between two inlet holes of the inlet, said second valve sheet is provided between two outlet holes of the outlet, and each of these two valve sheet is connected with the valve sheet transmission-control device via a valve pole and moves between the respective corresponding inlet holes or outlet holes under the control of the valve sheet transmission-control device to open or close the respective corresponding inlet holes or outlet holes; the valve sheet transmission-control device includes a handle mounted on the housing and connected with a cam via a transmission pole; the cam of the valve sheet transmission-control device consists of an inner cam and an outer cam; provided on the periphery of the inner cam is a flange, the upper surface of which includes a plane surface and a V-shaped surface; provided on the top of each of the valve poles, which the valve sheets are mounted to, is an Γ-shaped sliding hook which is embedded in the flange of the inner cam and positioned by the outer cam nested out; each of these two valve sheets is moved axially as the sliding hook slides along the flange of the inner cam; the valve poles are positioned by two valve frames respectively; there is a space length between said two inlet holes which are in the same axial direction, there is a space length between said two outlet holes which are the same axial direction, so that two valve sheets are moved axially between two inlet holes and two outlet holes to open or close the corresponding inlet holes or outlet holes respectively as the sliding hooks slide along the flange of the inner cam. When inflating, the first valve sheet is moved to the outlet hole communicated with external space to close the same and open another-outlet hole communicated with an internal space of an inflatable product, the second valve sheet is moved to the inlet hole communicated with the internal space to close the same and open another inlet hole communicated with external space; when deflating, the first valve sheet is moved to the outlet hole communicated with the internal space to close the same and open another outlet hole communicated with external space, the second valve sheet is moved to the inlet hole communicated with external space to close the same and open another inlet hole communicated with the internal space; when the air-pump is shut-off, the first valve sheet and the second valve sheet close the inlet hole communicated with external space and the outlet hole communicated with external space respectively.

The advantage of the present invention is to provide a built-in air-pump which is unnecessary to be removed and has a simple operation and excellent sealing effect, which can quickly inflate an inflatable product and quickly deflate the same as well.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of built-in electrical inflating and deflating pump of the present invention;

FIG. 2 is an exploded schematic diagram of the structure of built-in electrical inflating and deflating pump of the present invention;

FIG. 3 is a section view of the internal structure of built-in electrical inflating and deflating pump of the present invention;

FIG. 4 is a schematic diagram showing positions of two valve sheets and air-flow paths in an inflating state of the built-in electrical inflating and deflating pump of the present invention;

FIG. 5 is a schematic diagram showing positions of two valve sheets and air-flow paths in a deflating state of the built-in electrical inflating and deflating pump of the present invention;

FIG. 6 is a schematic diagram showing positions of two valve sheets and air-flow paths in a shut-off state of the built-in electrical inflating and deflating pump of the present invention;

FIG. 7 is a schematic diagram showing the valve sheet transmission-control device in an inflating state of the built-in electrical inflating and deflating pump of the present invention;

FIG. 8 is a schematic diagram showing the valve sheet transmission-control device in a deflating state of the built-in electrical inflating and deflating pump of the present invention; and

FIG. 9 is a schematic diagram showing the valve sheet transmission-control device in a shut-off state of the built-in electrical inflating and deflating pump of the present invention;

DETAILED DESCRIPTION OF SPECIFIC EMBODIMENTS

The preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1-3, the built-in electrical inflating and deflating pump includes air-pump 1, panel 2, housing 3, base 4, two valve sheets 5, 6 and valve sheet transmission-control device A. Exhaust and intake hole 21 is provided on panel 2, and panel 2 is fixed to housing 3 with bolts. The housing 3 has a portion opened outwards and a portion opened inwards. In the portion opened outwards, provided are inlet hole 31 communicated with external space and outlet hole 32 communicated with external space, which are circular holes, communicated with exhaust and intake hole 21 on panel 2 and provided with valve frames 34, 35 and O-rings 33 respectively. Valve sheet transmission-control device A is housed and fixed in the portion opened outwards, and motor 12 of air-pump 1 is housed in the portion opened inwards. Air-pump 1 is mounted in the base 4, and inlet hole 41 communicated with the internal space and outlet hole 42 communicated with the internal space are provided in the base 4. The air-pump 1 includes motor 12, vane 14, pump cover 11 and motor frame 13. Motor 12 is fixed in motor frame 13, rotating shaft of motor 12 is connected with vane 14, pump cover 11 is fixed on the periphery of base 4 to form a separate space for intake and pressurization, inlet 15 of air-pump is provided on pump cover 11, outlet 16 of the air-pump is provided in the position tangent to vane 14. The inlet hole 31 and 41 are communicated with inlet 15 of air-pump 1, and there is a space length between two inlet holes, the outlet hole 32 and 42 are communicated with outlet 16 of air-pump 1, and there is a space length between two outlet holes.

As for the two valve sheets, first valve sheet 5 is provided between inlet hole 31 and inlet hole 41, second valve sheet 6 is provided between outlet hole 32 and outlet hole 42; these two valve sheets are circular sheets and have size and shape fit to those of inlet holes 31, 41 and outlet holes 32, 42 respectively; O-rings 43 are provided in the openings of inlet hole 41 and outlet hole 42 via retaining rings 44; first valve sheet 5 and second valve sheet 6 are connected with valve pole 51 and valve pole 61 respectively, first valve sheet 5 is in the same axial direction as inlet hole 31 and inlet hole 41, and second valve sheet 6 is in the same axial direction as outlet hole 32 and outlet hole 42. Valve pole 51 and valve pole 61 are mounted in valve frame 34 and valve frame 35 respectively, so that these valve poles are positioned without shaking around.

As shown in FIG. 2, the valve sheet transmission-control device A includes inner cam 9, outer cam 8 and handle 7 which is provided on panel 2 and connected with outer cam 8 via turning pole 81. Inside outer cam 8 is mounted inner cam 9, on the periphery of which flange 91 is provided, one portion of the flange being a plane surface, and the other being a V-shaped surface. Γ-shaped sliding hooks 52, 62 are provided on the tops of said valve poles 51, 61, embedded in flange 91 of inner cam 9 and positioned by outer cam 8 nested out. Turning handle 7 rotates outer cam 8, outer cam 8 rotates inner cam 9 simultaneously, so that Γ-shaped sliding hooks 52, 62 in valve poles 51, 61 of valve cores 5, 6 slide along flange 91 of inner cam 9. Because flange 91 of inner cam 9 has a plane surface and a V-shaped surface, when the valve poles slide, they will drive first valve core sheet 5 to move up-down between inlet hole 31 and inlet hole 41 in a axial direction, and drive valve sheet 6 to move up-down between outlet hole 32 and outlet hole 42 in a axial direction, making valve sheets 5, 6 open or close respective corresponding inlet holes or outlet holes.

As shown in FIGS. 4 and 7, when inflating, handle 7 is turned to an inflating position, making valve pole 51 move to the bottom of the V-shaped surface of flange 91 of inner cam 9 as sliding hook 52 slides, so that first valve sheet 5 is moved to inlet hole 41 communicated with an internal space of an inflatable product to close the same and open inlet hole 31 communicated with external space, which makes air-pump 1 inspire air from external space, meanwhile, making valve pole 61 move to the plane surface of flange 91 of inner cam 9 as sliding hook 62 slides, so that second valve sheet 6 closes outlet hole 32 communicated with external space and opens outlet hole 42 communicated with the internal space, which makes air-pump 1 inspire air from external space and inflate the internal space. As shown in FIGS. 5 and 8, when deflating, handle 7 is turned to deflating position, making valve pole 51 move to the plane surface of flange 91 of inner cam 9 as sliding hook 52 slides, so that first valve sheet 5 closes inlet hole 31 communicated with external space and opens inlet hole 41 communicated with an internal space of an inflatable product, meanwhile, valve pole 61 is moved to the bottom of the V-shaped surface of flange 91 of inner cam 9 as sliding hook 62 slides, so that second valve sheet 6 is moved to outlet hole 42 communicated with the internal space to close the same and open outlet hole 32, which makes air-pump 1 deflate the internal space to external space. As shown in FIGS. 6 and 9, when the air-pump is shut-off, handle 7 is turned to a shut-off position, valve poles 51, 61 are at the plane surface of flange 91 of inner cam 9 as their respective sliding hooks slide, so that valve sheets 5, 6 close inlet hole 31 communicated with external space and outlet hole 32 communicated with external space simultaneously. The air-flow paths between external space and an internal space of an inflatable product are wholly closed. 

1. A built-in electrical inflating and deflating pump for inflatable product, comprising: an air-pump, a panel, a house housing and a base, characterized in that the air-pump comprises a first valve sheet, a second valve sheet and a valve sheet transmission-control device; the inlet of said air-pump is provided with an inlet hole communicated with external space and an inlet hole communicated with an internal space of an inflatable product respectively, the outlet of said air-pump is provided with an outlet hole communicated with external space and an outlet hole communicated with the internal space respectively as well; said first valve sheet is provided between two inlet holes of the inlet, said second valve sheet is provided between two outlet holes of the outlet, and each of these two valve sheets is connected with the valve sheet transmission-control device via a valve pole and moves between the respective corresponding inlet holes or outlet holes under the control of the valve sheet transmission-control device to open or close the respective corresponding inlet holes or outlet holes; said valve sheet transmission-control device comprises a handle mounted on the housing and connected with a cam.
 2. The built-in electrical inflating and deflating pump for inflatable product according to claim 1, wherein said cam of the valve sheet transmission-control device consists of an inner cam and an outer cam; provided on the periphery of the inner cam is a flange, the surface of which including a plane surface and a V-shaped surface, provided on the top of each of the valve poles, which the valve sheets are mounted to, is an Γ-shaped sliding hook which is embedded in the flange of the inner cam and positioned by the outer cam nested out; the valve poles are positioned by two valve frames respectively.
 3. The built-in electrical inflating and deflating pump for air-inflation product according to claim 1, wherein there is a space length between said two inlet holes which are in the same axial direction, these two inlet holes are circular holes, each of which has a same diameter fit to the diameter of the first valve sheet and is provided with an O-ring via a retaining ring; there is a space length between said two outlet holes which are in the same axial direction, these two outlet holes are circular holes, each of which has a same diameter fit to the diameter of the second valve sheet and is provided with an O-ring via a retaining ring. 